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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/http/des.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "crypto/openssl_util.h" | |
| 9 #include "third_party/boringssl/src/include/openssl/des.h" | |
| 10 | |
| 11 // The iOS version of DESEncrypt is our own code. | |
| 12 // DESSetKeyParity and DESMakeKey are based on | |
| 13 // mozilla/security/manager/ssl/src/nsNTLMAuthModule.cpp, CVS rev. 1.14. | |
| 14 | |
| 15 /* ***** BEGIN LICENSE BLOCK ***** | |
| 16 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 | |
| 17 * | |
| 18 * The contents of this file are subject to the Mozilla Public License Version | |
| 19 * 1.1 (the "License"); you may not use this file except in compliance with | |
| 20 * the License. You may obtain a copy of the License at | |
| 21 * http://www.mozilla.org/MPL/ | |
| 22 * | |
| 23 * Software distributed under the License is distributed on an "AS IS" basis, | |
| 24 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License | |
| 25 * for the specific language governing rights and limitations under the | |
| 26 * License. | |
| 27 * | |
| 28 * The Original Code is Mozilla. | |
| 29 * | |
| 30 * The Initial Developer of the Original Code is IBM Corporation. | |
| 31 * Portions created by IBM Corporation are Copyright (C) 2003 | |
| 32 * IBM Corporation. All Rights Reserved. | |
| 33 * | |
| 34 * Contributor(s): | |
| 35 * Darin Fisher <darin@meer.net> | |
| 36 * | |
| 37 * Alternatively, the contents of this file may be used under the terms of | |
| 38 * either the GNU General Public License Version 2 or later (the "GPL"), or | |
| 39 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), | |
| 40 * in which case the provisions of the GPL or the LGPL are applicable instead | |
| 41 * of those above. If you wish to allow use of your version of this file only | |
| 42 * under the terms of either the GPL or the LGPL, and not to allow others to | |
| 43 * use your version of this file under the terms of the MPL, indicate your | |
| 44 * decision by deleting the provisions above and replace them with the notice | |
| 45 * and other provisions required by the GPL or the LGPL. If you do not delete | |
| 46 * the provisions above, a recipient may use your version of this file under | |
| 47 * the terms of any one of the MPL, the GPL or the LGPL. | |
| 48 * | |
| 49 * ***** END LICENSE BLOCK ***** */ | |
| 50 | |
| 51 // Set odd parity bit (in least significant bit position). | |
| 52 static uint8_t DESSetKeyParity(uint8_t x) { | |
| 53 if ((((x >> 7) ^ (x >> 6) ^ (x >> 5) ^ | |
| 54 (x >> 4) ^ (x >> 3) ^ (x >> 2) ^ | |
| 55 (x >> 1)) & 0x01) == 0) { | |
| 56 x |= 0x01; | |
| 57 } else { | |
| 58 x &= 0xfe; | |
| 59 } | |
| 60 return x; | |
| 61 } | |
| 62 | |
| 63 namespace net { | |
| 64 | |
| 65 void DESMakeKey(const uint8_t* raw, uint8_t* key) { | |
| 66 key[0] = DESSetKeyParity(raw[0]); | |
| 67 key[1] = DESSetKeyParity((raw[0] << 7) | (raw[1] >> 1)); | |
| 68 key[2] = DESSetKeyParity((raw[1] << 6) | (raw[2] >> 2)); | |
| 69 key[3] = DESSetKeyParity((raw[2] << 5) | (raw[3] >> 3)); | |
| 70 key[4] = DESSetKeyParity((raw[3] << 4) | (raw[4] >> 4)); | |
| 71 key[5] = DESSetKeyParity((raw[4] << 3) | (raw[5] >> 5)); | |
| 72 key[6] = DESSetKeyParity((raw[5] << 2) | (raw[6] >> 6)); | |
| 73 key[7] = DESSetKeyParity((raw[6] << 1)); | |
| 74 } | |
| 75 | |
| 76 void DESEncrypt(const uint8_t* key, const uint8_t* src, uint8_t* hash) { | |
| 77 crypto::EnsureOpenSSLInit(); | |
| 78 | |
| 79 DES_key_schedule ks; | |
| 80 DES_set_key( | |
| 81 reinterpret_cast<const DES_cblock*>(key), &ks); | |
| 82 | |
| 83 DES_ecb_encrypt(reinterpret_cast<const DES_cblock*>(src), | |
| 84 reinterpret_cast<DES_cblock*>(hash), &ks, DES_ENCRYPT); | |
| 85 } | |
| 86 | |
| 87 } // namespace net | |
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